1. Ansari, Q.H., Lalitha, C.S., Mehta, M.: Generalized Convexity, Nonsmooth Variational Inequalities, and Nonsmooth Optimization. CRC Press, Boca Raton (2014)
2. Auslender, A., Teboulle, M.: Asymptotic Cones and Functions in Optimization and Variational Inequalities. Springer-Verlag, New York (2003)
3. Bauschke, H.H., Combettes, P.L.: Convex Analysis and Monotone Operators Theory in Hilbert Spaces. CMS Books in Mathematics, 2nd edn. Springer-Verlag (2017)
4. Beck, A.: First Order Methods in Optimization. Series on Optimization. SIAM, Philadelphia, MOS-SIAM (2017)
5. Cambini, A., Martein, L.: Generalized Convexity and Optimization. Springer-Verlag, Berlin-Heidelberg (2009)